diff --git a/plat/qemu/qemu/include/platform_def.h b/plat/qemu/qemu/include/platform_def.h
index 0891d809d..c02eff9a8 100644
--- a/plat/qemu/qemu/include/platform_def.h
+++ b/plat/qemu/qemu/include/platform_def.h
@@ -80,8 +80,8 @@
 #define SEC_ROM_BASE			0x00000000
 #define SEC_ROM_SIZE			0x00020000
 
-#define NS_DRAM0_BASE			0x40000000
-#define NS_DRAM0_SIZE			0xc0000000
+#define NS_DRAM0_BASE			ULL(0x40000000)
+#define NS_DRAM0_SIZE			ULL(0xc0000000)
 
 #define SEC_SRAM_BASE			0x0e000000
 #define SEC_SRAM_SIZE			0x00060000